单项选择题

You are required to wear ______ clothing before you enter the room.

A. protect
B. protective
C. protection
D. protecting
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单项选择题
______ the company is not as successful as other big companies, it's proven it can expand internationally.
A. Even though
B. If
C. Yet
D. As though
单项选择题
It was my deepest regret that I failed to submit my report by the ______ deadline.
A. ready
B. original
C. considering
D. hesitant
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